I don't get what people see in that anime. Why would I want to watch something that could have just been called "What my life would be like if I were a japanese girl: A documentary on social awkwardness"? Come on, if I wanted to see my life, I wouldn't be watching anime.

Here you are. In short, the whole episode revolves around her talking about how popular high school girls get molested, and she wants to get molested for that reason. In the train, she thinks shes getting molested because so many people came in and squeezed her in and she gets raped, but little does she know it was a wooden sword thing ( I'm sorry, I don't know the name ) that another school girl dropped by mistake and when she picked it back up it was between kuroki's legs, so she started panicking. The last picture is when she left the bus and screamed rape, only to realize it was indeed the sword.